It's not a build I play as it's a more tankier approach, but I can suggest 2 things.

1) Swap out Hounds for Renewed Focus. 3 second invulnerability while resetting all virtues every 90 seconds? Yes please.

2) Use Shelter instead of Signet. As you put you are Human, swap between Shelter & Prayer to Dwayna as necessary. This means you can drop your 10 points in Radiance and put them into Honor for any 3 Writ traits to benefit your mace #2.

I trust you also have a Focus in your bag as it can be a lot more useful in many situations.

I'm sure someone else can shed some light on "how" to play this build.

From what I can find on-line, haven't checked in-game, but the runes can be bought from the TP.

In terms of getting stats similar to what the PVP amulet provides you really can't achieve those numbers. The PVP knight amulet provides Power/Precision/Vitality (emphasis), while PVE armor is broke into either

You can't achieve +20k health, 50% crit chance and a high power ratio in PVE. The closes you could get would be using all Valkyrie or Soldier armor/trinkets, for high levels of Vitality and Power. Then use runes and traits like 1-handed strength to gain high crit chances. It could be done, but your build would be highly restrictive and less productive then the standard guardian builds already created.